About the only way I know to sex auratus is to hear a male calling and locate him. The females are supossed to be a bit more plump in the gut, and the males more slender, but I have four blue auratus with all of those features among them, and after 8 years, they are quite decidedly all females. I've never heard any calling or witnessed any breeding activity, although I did find some eggs once. Patrick Nabors told me that sometimes female auratus will lay eggs without a male around. Of course, they aren't fertile.
One sexing trick someone told me about and demonstrated at a frog show, was with some species, (demonstrated with D. tictorius) in a deli-cup for shipping, you can rotate the cup, and the males will raise their heads, while the females will lower theirs.
Females are supposed to be fatter in the gut, and generally bigger than males. This is very hard to determine, although in time you may develop and "instict" for it. I've been pretty good at it so far, pairing out my pumilios, but it also could have been sheer accident. After I had two of them paired up, the one I thought was the female was calling to the one I thought was a male. So while I did manage to pair male with female, I had them reversed. In any event, they are raising babies.
I wouldn't worry about breeding at first. Just enjoy the frogs and the show they put on, get some experience with just keeping them. The best way to learn stuff is to observe them.



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Patty
Pahsimeroi, Idaho
4 D. auratus blue
6 D. galactonotus pumpkin orange splash back
7 D. imitator
6 D. leucomelas
5 D. pumilio Bastimentos
4 D. fantasticus
6 P. terribilis mint and organe
4 D. reticulatus
4 D. castaneoticus
2 D. azureus
4 P vittatus
2 P. lugubris